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Can you use one ground wire for two motors with the ATV212 drives?

Customer is feeding two motors with one ATV212 drive.  The contractor only used one ground wire coming back to the drive.  Is this acceptable?

Product line:
ATV212, Altivar 212


Grounding wires are normally separated.

From Product Engineering, if the two motors are mounted on the same structure they can use one ground wire coming back to the drive for both motors.

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